HyperKeys - Unleash the power of your keyboard by letting you bind ANY action to a shortcut. It's open-source and fully extendable. You can code you own actions or use one from the community !
Rectangle - Window management app based on Spectacle, written in Swift.
Skippy-XD - Skippy-XD is a full-screen task-switcher for X11.
AquaSnap - Too many windows on your screen? Stop wasting your productivity.
VistaSwitcher - VistaSwitcher is an elegant and powerful task management utility for Windows OS.
WindowGrid - Quickly and easily layout windows on a dynamic grid using just the mouse.